Sewing machine



FIG. 1 is a perspective view of the sewing machine showing our new design;

FIG. 2 is a left side view of the sewing machine;

FIG. 3 is a right side view of the sewing machine;

FIG. 4 is a front end view of the sewing machine with the detailing on the right side omitted for ease of illustration;

FIG. 5 is a rear end view of the sewing machine; and

FIG. 6 is a top plan view of the sewing machine. 

The ornamental design for a sewing machine, as shown and described. 